Chief Master Sergeant John - 117 from Halo is often a popular character in these crossovers. His super - soldier abilities and leadership make him a natural fit in the chaotic and dangerous Warhammer 40k universe.
The Chaos Space Marines are also quite popular in these crossovers. Their dark and menacing nature contrasts well with the more 'heroic' characters from Halo. For example, Abaddon the Despoiler could be a major antagonist in a Halo x Warhammer 40k fanfiction, creating a lot of tension and conflict as he tries to spread the power of Chaos to the Halo universe.
In Halo Warhammer 40k crossover fanfiction, the Librarians from Warhammer 40k are quite popular. Their psychic powers can lead to some really cool interactions with Halo's technology and characters. They can sense things in the Warp, and how would that work when dealing with the more scientific Halo universe? Cortana from Halo is also a favorite. Her artificial intelligence is something that doesn't really exist in the same way in Warhammer 40k. So seeing her interact with the various tech - priests or even daemon - possessed entities could be really interesting. Additionally, Chaos Space Marines are often used for their menacing and unpredictable nature in crossovers.
The Silent King Szarekh is also very popular. He represents the ancient and mysterious nature of the Necrons. Fanfiction might delve into his past, his reasons for leading the Necrons, and his long - term plans for the galaxy.
The Space Marines are often very popular. Their noble and fearless nature makes them appealing protagonists. They are highly trained warriors with advanced technology at their disposal, and in the fanfiction, they can be portrayed in various ways, from following strict codes to breaking them for the greater good.
Probably the Space Marines are quite popular. Their strong and noble image makes them interesting candidates for reincarnation stories. They could be reincarnated with enhanced abilities or a new purpose. Another popular character might be the Emperor of Mankind. Fans often like to explore the idea of his possible reincarnation and how it would change the entire Warhammer 40k universe.
Some of the Warhammer 40k characters might also be popular in these crossovers. For instance, the Ultramarines are well - known and could be paired up with Naruto characters. Their sense of honor and combat prowess can create interesting interactions. The way they would view Naruto's powers and vice - versa can lead to some really engaging storylines.
In Warhammer 50k fanfiction, characters like the Sisters of Battle are quite popular. They are strong, devout warriors, and their stories of faith and combat can be really inspiring. There are also Inquisitors who are often central characters. They have the power to investigate and root out heresy, and their complex personalities, some being more noble and some being more morally ambiguous, make for great storytelling. Additionally, the Ork warbosses can be popular as they bring a lot of chaotic and violent energy to the stories.
Horus Lupercal is a very popular character. His fall from grace and the events leading up to it are often the focus of fanfictions. Another popular one is Magnus the Red. His connection to the warp and his attempts to warn the Emperor make for great story material. Also, Leman Russ is popular. His no - nonsense attitude and his relationship with his legion are often explored in fanfic.
One of the most popular characters is often the Space Marine. Their super - human abilities and noble, if sometimes dogmatic, nature make them appealing. They are often depicted as heroes in fanfiction, bravely facing the hordes of enemies in the dark and gritty Warhammer 40k universe.
The Archon is often a popular character. His power and devious nature make for great stories. He's usually at the center of power plays and schemes in Commorragh. Another popular one is the Succubus. With her combat skills and allure, she can be a central figure in stories about wych cults and battles.
Celestine is often a very popular character in fanfiction. Her divine nature and incredible combat abilities make her a fascinating subject. Writers can explore her connection to the Emperor's will in more depth.